<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="content" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div class="search-content" v-show="keyword" ref="search">
      <ul>
        <li class="item border-bottom"
            v-for="item of list"
            :key="item.id"
            @click="handleChangeCity(item.name)"
        >{{item.name}}</li>
        <li class="item border-bottom" v-show="hasListData">没有找到匹配项</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      list: [],
      keyword: '',
      timer: null
    }
  },
  methods: {
    handleChangeCity (city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
    }
  },
  computed: {
    hasListData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-bottom
    &:before
      border-color: #ccc
  .search
    background: $bgcolor
    height: .72rem
    padding: 0 .1rem
    .content
      width: 100%
      height: .62rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
      box-sizing: border-box
      padding 0 .1rem
  .search-content
    z-index: 1
    overflow: hidden
    position absolute
    top: 1.6rem
    left: 0
    right: 0
    bottom: 0
    background: #ccc
    .item
      height: .44rem
      line-height: .44rem
      text-indent: .2rem
      background: #eee
</style>
